• Journal of Chest Surgery
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• 제43권2호
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• pp.172-175
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• 2010

61세 남자 환자가 급성 흉통을 주소로 전원 되었으며, 심전도상 ST분절 상승 소견 및 흉통으로 급성 심근 경색 진단 하에 심혈관 조영술을 시행하였다. 좌회선동맥 둔각변연분지의 완전 폐색 소견 보여 대동맥 내 풍선장치 삽입 하에 혈관 중재술을 시행하였으나, 성공적인 혈관 중재술 후에도, 쇼크 지속되어 체외막 산소화 장치를 삽입하였다. 그러나, 이후에도 상태는 호전되지 않았고, 청진 및 심초음파상 심한 급성 승모판 폐쇄 부전 발견되어 승모판막 치환술을 시행하였다. 술 후 이틀째 체외막 산소화 장치 및 대동맥 내 풍선장치를 제거할 수 있었고, 수술 후 48일째 자가 보행 가능한 상태로 퇴원하였다.

• Journal of Yeungnam Medical Science
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• 제29권2호
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• pp.129-131
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• 2012

A 70-year-old male came to the emergency room of the authors' hospital because of sudden cardiac arrest due to inferior wall ST elevation myocardial infarction. His coronary angiography revealed multiple severe coronary spasms in his very long left anterior descending artery. After an injection of intracoronary nitroglycerine, his stenosis improved. The cardiac arrest relapsed, however, accompanied by ST elevation of the inferior leads, while the patient was on diltiazem and nitrate medication to prevent coronary spasm. Recovery was not achieved even with cardiac massage, intravenous injection of epinephrine and atropine, and intravenous infusion of nitroglycerine. The patient eventually recovered through high-dose nicorandil intravenous infusion without ST elevation of his inferior leads. Therefore, intravenous infusion of a high dose of nicorandil must be considered a treatment option for cardiac arrest caused by refractory coronary vasospasm.

• Korean Journal of Radiology
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• 제24권9호
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• pp.827-837
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• 2023

Objective: To investigate the predictive value of radiomics features based on cardiac magnetic resonance (CMR) cine images for left ventricular adverse remodeling (LVAR) after acute ST-segment elevation myocardial infarction (STEMI). Materials and Methods: We conducted a retrospective, single-center, cohort study involving 244 patients (random-split into 170 and 74 for training and testing, respectively) having an acute STEMI (88.5% males, 57.0 ± 10.3 years of age) who underwent CMR examination at one week and six months after percutaneous coronary intervention. LVAR was defined as a 20% increase in left ventricular end-diastolic volume 6 months after acute STEMI. Radiomics features were extracted from the oneweek CMR cine images using the least absolute shrinkage and selection operator regression (LASSO) analysis. The predictive performance of the selected features was evaluated using receiver operating characteristic curve analysis and the area under the curve (AUC). Results: Nine radiomics features with non-zero coefficients were included in the LASSO regression of the radiomics score (RAD score). Infarct size (odds ratio [OR]: 1.04 (1.00-1.07); P = 0.031) and RAD score (OR: 3.43 (2.34-5.28); P < 0.001) were independent predictors of LVAR. The RAD score predicted LVAR, with an AUC (95% confidence interval [CI]) of 0.82 (0.75-0.89) in the training set and 0.75 (0.62-0.89) in the testing set. Combining the RAD score with infarct size yielded favorable performance in predicting LVAR, with an AUC of 0.84 (0.72-0.95). Moreover, the addition of the RAD score to the left ventricular ejection fraction (LVEF) significantly increased the AUC from 0.68 (0.52-0.84) to 0.82 (0.70-0.93) (P = 0.018), which was also comparable to the prediction provided by the combined microvascular obstruction, infarct size, and LVEF with an AUC of 0.79 (0.65-0.94) (P = 0.727). Conclusion: Radiomics analysis using non-contrast cine CMR can predict LVAR after STEMI independently and incrementally to LVEF and may provide an alternative to traditional CMR parameters.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2012년도 한국컴퓨터종합학술대회논문집 Vol.39 No.1(C)
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• pp.139-141
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• 2012

이 논문에서는 한국인 급성심근경색증 환자에 대한 KAMIR 데이터를 기반으로 ST분절상승 심근경색이 처음 발병한 환자의 사망에 영향을 미치는 위험요소들을 찾고, 이를 기반으로 ST분절상승 급성심근경색환자의 1년 이내 사망을 예측하는 모델을 제시한다. 총 22개의 속성 중에서 속성 선택 알고리즘을 적용한 결과 나이, 심장박출계수, 크레아티닌, 고감도 C-반응성 단백질 등 4개의 속성이 선택되었고, 이 속성들을 이용하여 더욱 정확한 예측 모델을 구축할 수 있었다. 제시된 모델을 통해서 고위험군 환자의 위험성을 평가하고 예후를 추정할 수 있을 것으로 기대한다.

• Korean Circulation Journal
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• 제52권10호
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• pp.737-754
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• 2022

Ischemic and reperfusion injuries of the heart underlie the pathogenesis of acute myocardial infarction (AMI) and sudden cardiac death. The mortality rate is still high and is 5-7% in patients with ST-segment elevation myocardial infarction. The review is devoted to pharmacological approaches to limitation of ischemic and reperfusion injuries of the heart. The article analyzes experimental evidence and the clinical data on the effects of P2Y₁₂ receptor antagonists on the heart's tolerance to ischemia/reperfusion in animals with coronary artery occlusion and reperfusion and also in patients with AMI. Chronic administration of ticagrelor prevented adverse remodeling of the heart. There is evidence that sphingosine-1-phosphate is the molecule that mediates the infarct-reducing effect of P2Y₁₂ receptor antagonists. It was discussed a role of adenosine in the cardioprotective effect of ticagrelor.

• 한국임상약학회지
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• 제28권3호
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• pp.250-253
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• 2018

When stenting is applied to treat myocardial infarction, antiplatelet agents are administered to prevent thrombosis, which increases the risk of bleeding. Patients with myocardial infarction are also more likely to have osteoarthritis simultaneously, because both diseases occur frequently in elderly patients. Patients with osteoarthritis often use analgesics, especially nonsteroidal anti-inflammatory drugs (NSAIDs); hence, patients with both diseases use analgesics and antiplatelet agents simultaneously. The risk of bleeding increases with the use of antiplatelet agents and this is further increased when NSAIDs are added. We would like to report a case that reflects this situation. A 60-year-old man underwent stenting after ST-elevation myocardial infarction, and was treated with aspirin and clopidogrel. This patient also received a pelubiprofen prescription from another physician to treat osteoarthritis. After the patient took pelubiprofen twice, he found a bruise on his wrist and reported it to the pharmacist. It is unlikely that this is rare in community pharmacies, so pharmacists should pay careful attention to the concomitant administration of analgesics to patients receiving antiplatelet agents and should provide appropriate education to patients.

• 한국방사선학회논문지
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• 제6권1호
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• pp.5-10
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• 2012

AMI로 SES 혹은 PES 시술을 시행받은 모든 환자에서 4년 이상의 임상추적 기간이 지난 환자를 대상으로 데이터를 분석하여 두 스텐트의 안전성과 유용성을 비교해 보고자 하였다. 2004년 1월 1일부터 2006년 8월 31일까지 본원에서 ST분절 상승 혹은 ST 분절 비상승 급성심근경색증 (STEMI or NSTEMI)로 진단되어 입원 기간 중 관동맥중재술을 시행받은 환자 중 SES 혹은 PES 삽입술이 시행된 환자를 대상으로 후향적 분석을 시행하였다. 그리고 사망, 심장사. 심근경색증, 표적 혈관재관류술, 스텐트 혈전증 발생에 대해 분석하였다. 연구 기간 동안 총 668명의 급성심근경색증 환자가 중 522명만 연구 대상에 포함 사망 ($18.3{\pm}3.0%$ vs. $14.6{\pm}2.2%$, p=0.26), 심장사($11.2{\pm}2.6%$ vs. $6.8{\pm}1.52%$, p=0.39), 심근경색증 ($6.4{\pm}1.8%$ vs. $3.3{\pm}1.1%$, p=0.31), and 스텐트 혈전증 ($5.4{\pm}1.7%$ vs. $3.2{\pm}1.1%$, p=0.53) 표적 혈관재관류술(TVR) ($10.0{\pm}3.0%$ vs. $4.0{\pm}1.2%$, p=0.008) and 심혈관계 임상사건(MACE) ($29.4{\pm}3.5%$ vs. $19.4{\pm}2.5%$, p=0.003) 급성심근경색증의 초기 치료에 약물방출스텐트인 SES와 PES의 4년 장기 임상 성적을 조사한 본 연구를 통해 전체환자를 대상으로 분석하였을 때 두 스텐트의 장기 사망률, 심장사. 심근경색증, 표적 혈관재관류술, 스텐트 혈전증의 발생은 차이가 없었으나 TVR 및 MACE의 발생은 PES 삽입 환자가 SES삽입 환자보다 유의하게 높았다.

• The Korean journal of internal medicine
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• 제33권6호
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• pp.1111-1118
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• 2018

Background/Aims: Chest pain is an essential symptom in the diagnosis of acute coronary syndrome (ACS). One-third of patients with ACS present atypically, which can influence their receiving timely lifesaving therapy. Methods: A total of 617 NSTEMI patients from the Korea Acute MI Registry (KAMIR) and the Korea Working Group on MI (KorMI) databases were analyzed. The study population was divided into two groups by symptoms at presentation (typical symptoms group, 128; atypical symptoms groups, 128). Results: In this study population, 23% of patients presented without chest pain. After propensity score matching, the contact-to-device time ($2,618{\pm}381minutes$ vs. $1,739{\pm}241minutes$, p = 0.050), the symptoms-to-balloon time ($3,426{\pm}389minutes$ vs. $2,366{\pm}255minutes$, p = 0.024), and the door-to-balloon time ($2,339{\pm}380minutes$ vs. $1,544{\pm}244minutes$, p = 0.002) were significantly higher in the patients with atypical symptoms than in those with typical symptoms, respectively. Atypical symptoms were an independent predictor for 1-year mortality (hazard ratio, 2.820; 95% confidence interval, 1.058 to 7.515; p = 0.038). The Kaplan-Meier estimates showed higher risk for 12-month mortality in patients with atypical symptoms (p = 0.048) and no significant difference for 12-month major adverse cardiac events (p = 0.487). Conclusions: Acute myocardial infarction patients with atypical symptoms were not rare in clinical practice and showed a high risk of delayed reperfusion therapy. After imbalance between the groups was minimized by use of propensity score matching, patients who presented atypically had a high mortality rate.

• Journal of Yeungnam Medical Science
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• 제35권2호
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• pp.227-231
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• 2018

Left main coronary artery (LMCA) thrombosis is rare and the cause should be determined. A previously healthy young man presented with severe chest pain and dyspnea. The electrocardiogram showed typical ST-segment elevation myocardial infarction with clinical instability. Emergency coronary angiography revealed complete LMCA occlusion by thrombosis. After reperfusion, the patient was admitted to the cardiac care unit. He was diagnosed with hemolytic anemia and tested positive for antinuclear antibodies. Systemic lupus erythematosus (SLE) and LMCA disease due to systemic thrombosis were diagnosed. Steroids were started and the patient was discharged without complications. We report this rare case of LMCA thrombosis as an initial presentation of SLE.

• Journal of Chest Surgery
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• 제52권2호
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• pp.70-77
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• 2019

Background: Extracorporeal life support (ECLS) is used as a bridge to revascularization in high-risk patients with ischemic heart disease. We reviewed our experiences of coronary artery bypass grafting (CABG) after ECLS in patients with cardiac arrest or refractory cardiogenic shock. Methods: We retrospectively reviewed 4,616 patients who underwent CABG at our institution between May 2006 and February 2017. We identified patients who underwent CABG following ECLS for cardiogenic shock or cardiac arrest. Twenty-three patients (0.5% of all CABG cases) were enrolled in the analysis. Their median age was 65 years (Q1-Q3, 58-77 years). Nine patients (39.1%) were diagnosed with ST-elevation myocardial infarction. Mechanical complications after acute myocardial infarction, including acute mitral regurgitation, left ventricular rupture, and ventricular septal defect, occurred in 9 patients (39.1%). Results: The median time from cardiopulmonary resuscitation to ECLS initiation was 25 minutes (Q1-Q3, 18.5-28.5 minutes). Conventional CABG was performed in 10 patients (43.5%) who underwent concomitant intracardiac procedures. Postoperative ECLS was required in 16 patients (69.5%). The rate of successful ECLS weaning was 91.3% (n=21). There were 6 early mortalities (26.1%). Conclusion: CABG after ECLS was very rare in real-world circumstances. Although the early mortality rate was high, the risk of mortality may be acceptable under such devastating circumstances.